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9L 5s refers to the structure of moment of symmetry scales with generators ranging from 2\9edo (two degrees of 9edo = 266¢) to 3\14 (three degrees of 14edo = 257¢). In the case of 14edo, L and s are the same size; in the case of 9edo, s becomes so small it disappears. The generator can be said to approximate 7/6, but just 7/6 is larger than 2\9edo, so it cannot be used as a generator. The simplest just interval that works as a generator is 36/31. Two generators are said to create a fourth like Godzilla, but in reality it is closer to 27/20, if that is considered a consonance.

9L5s is third smallest MOS of Semiphore.

generator in degrees of an edo
generator in cents
L in cents
s in cents
notes
3\14
257¢
86¢
86¢
L=s

258.87¢
94¢
70¢
Just interval 36/31
8\37
259¢
97¢
65¢

5\23
261¢
104¢
52¢
L≈2s

~261.5¢
104¢
52¢
L=2s
7\32
262¢
113¢
38¢

2\9
266¢
266¢

s=0